/* Copyright (C) 2022-2025 mintsuki and contributors.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

 #ifndef FLANTERM_PRIVATE_H
 #define FLANTERM_PRIVATE_H 1
 
 #ifndef FLANTERM_IN_FLANTERM
 #error "Do not use flanterm_private.h. Use interfaces defined in flanterm.h only."
 #endif
 
 #include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
 
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
 #define FLANTERM_MAX_ESC_VALUES 16
 
     struct flanterm_context
     {
         /* internal use */
 
         size_t tab_size;
         bool autoflush;
         bool cursor_enabled;
         bool scroll_enabled;
         bool control_sequence;
         bool escape;
         bool osc;
         bool osc_escape;
         bool rrr;
         bool discard_next;
         bool bold;
         bool bg_bold;
         bool reverse_video;
         bool dec_private;
         bool insert_mode;
         uint64_t code_point;
         size_t unicode_remaining;
         uint8_t g_select;
         uint8_t charsets[2];
         size_t current_charset;
         size_t escape_offset;
         size_t esc_values_i;
         size_t saved_cursor_x;
         size_t saved_cursor_y;
         size_t current_primary;
         size_t current_bg;
         size_t scroll_top_margin;
         size_t scroll_bottom_margin;
         uint32_t esc_values[FLANTERM_MAX_ESC_VALUES];
         uint64_t oob_output;
         bool saved_state_bold;
         bool saved_state_bg_bold;
         bool saved_state_reverse_video;
         size_t saved_state_current_charset;
         size_t saved_state_current_primary;
         size_t saved_state_current_bg;
 
         /* to be set by backend */
 
         size_t rows, cols;
 
         void (*raw_putchar)(struct flanterm_context *, uint8_t c);
         void (*clear)(struct flanterm_context *, bool move);
         void (*set_cursor_pos)(struct flanterm_context *, size_t x, size_t y);
         void (*get_cursor_pos)(struct flanterm_context *, size_t *x, size_t *y);
         void (*set_text_fg)(struct flanterm_context *, size_t fg);
         void (*set_text_bg)(struct flanterm_context *, size_t bg);
         void (*set_text_fg_bright)(struct flanterm_context *, size_t fg);
         void (*set_text_bg_bright)(struct flanterm_context *, size_t bg);
         void (*set_text_fg_rgb)(struct flanterm_context *, uint32_t fg);
         void (*set_text_bg_rgb)(struct flanterm_context *, uint32_t bg);
         void (*set_text_fg_default)(struct flanterm_context *);
         void (*set_text_bg_default)(struct flanterm_context *);
         void (*set_text_fg_default_bright)(struct flanterm_context *);
         void (*set_text_bg_default_bright)(struct flanterm_context *);
         void (*move_character)(struct flanterm_context *, size_t new_x, size_t new_y, size_t old_x, size_t old_y);
         void (*scroll)(struct flanterm_context *);
         void (*revscroll)(struct flanterm_context *);
         void (*swap_palette)(struct flanterm_context *);
         void (*save_state)(struct flanterm_context *);
         void (*restore_state)(struct flanterm_context *);
         void (*double_buffer_flush)(struct flanterm_context *);
         void (*full_refresh)(struct flanterm_context *);
         void (*deinit)(struct flanterm_context *, void (*)(void *, size_t));
 
         /* to be set by client */
 
         void (*callback)(struct flanterm_context *, uint64_t, uint64_t, uint64_t, uint64_t);
     };
 
     void flanterm_context_reinit(struct flanterm_context *ctx);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif
 